very wrong, unrescuable.
'Pear-shaped' is an RAF euphemism for 'tits-up', which is itself a euphemism for 'dead'.
The Oxford dictionary definition cites an RAF source in 1983. I was an RAF pilot in 1983. The reason no-one will confirm the meaning officially is that it's rude, hence the rubbish about aerobatics. Loops that go wrong are egg-shaped, and have always been referred to as such.
Sorry chaps, tonight's session has gone pear-shaped. The bus is broken and 4 of the lads have been nabbed for night flying.
when the shit aint goin right
its gone all fuckin pear shaped!
If you are to have a large evening that consists of consuming ridiculous amounts of either alcohol or illegal substances you are bound to end up pear shaped.When your mind and internal organs are not functioning as they should do,due to mind altering substance use, you are pear shaped.
"Gee whiz,last night was a fuckn corka!Tell ya what,I'm gonna be fuckn PEAR SHAPED tomorrow!!YEEEEEEEEEEEE!!!"